PurpleCrystal

The theme that you are looking at now. It is still

Stablish

A drafted XOOPS.org design. Click here to see the demo.
The demo is the latest design. It has not been ported to XOOPS yet. There's no plan to release it.

Inspire

A theme currently used by XOOPS China. Click here to see the demo.
You can also visit XOOPS China(in Chinese) to see what it's like. (I've modified the design since it was applied on XOOPS China. So you can see the latest design on XOOPS China. The demo here will not be updated)
This theme has already been released as a free theme. You can check it out on the download page.